Marine - The state-of-the-knowledge white paper on this subject was completed July 2001. Issues addressed in the white paper include hydrologic and ecological effects (physical and chemical) of construction and maintenance dredging in saltwater areas associated with navigation channels, marinas, sediment cleanup, as well as port and other commercial developments.

Freshwater - The state-of-the-knowledge white paper on this subject was completed December 2001. Issues addressed in the white paper include hydrologic and ecological effects of in-channel bar scalping, risks and avulsions associated with floodplain pits, freshwater dredging, instream sediment sumps and gravel pits, gravel removal.

White Paper Content and Issues - Each white paper includes some or all of the following elements: overview of the guidelines program, overview of the subject white paper, assessment of the state of knowledge, summary of existing guidance, recommendations for future guidance documents, glossary of technical terms, bibliography, and an appendix containing other references and information sources. The issues being addressed in the white papers are diverse, in that they range from topics of design, construction, and operation of specific structures to the assessment of ecological impacts stemming from structures and activities affecting aquatic habitats. The coverage will vary among papers depending on research conducted on the subject matter and reported in the scientific and technical literature. Analysis of project specific monitoring, mitigation studies, and similar efforts are beyond the scope of this program. Each white paper and/or white paper topic was reviewed by multi-agency and multi-state panels of experts in informal peer review workshops in late 2000. Appropriate comments and recommendations generated in these workshops and from subsequent written comments are incorporated into the final white papers.

• White Paper Authors - The experts involved in the white paper project represent a variety of agency, private, government, commercial, and academic interests.
  Dredging & Gravel Removal Authors:
  Marine - Barbara Nightingale and Charles Simenstad, University of Washington, School of Aquatic and Fishery Sciences, Seattle, Washington
  Freshwater - Mathias Kondolf, Ph.D., University of California, Berkeley, California.